COADE SEMINAR NOTES PDF

COADE Pipe Stress Analysis Seminar Notes – Ebook download as PDF File .pdf) , Text File .txt) or read book online. Download COADE Pipe Stress Analysis Seminar Notes. Scribd is the world’s largest social reading and publishing friends, i have a very old edition of “coade pipe stress analysis-seminar notes” (i think ).

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Where excessive displacement is a problem, increasing the number of convolutions can be the solution. SJI C51 csu 57 U. For the fourth requirement: This angular stiffness for a guided cantilever expansion joint model is calculated as: Add to your Watched Users. For more information on seismic response spectra, refer to Sections 4 and 5 of these seminar notes.

Sifs, interpretations,Coade seminar notes and confussion – Intergraph CADWorx & Analysis

Sustained loads were discussed as beingthe most common types ofprimary loads. Page of Coade seminar notes suggests App D sifs Ii,Io be included in the calculation of the sustained loads Sl, and that the occasional loads be calculated likewise. The requirement for the minimum pipe component wall thickness is: Node points are required at any location where it is necessary to provide information to, or obtain information from, the pipe stress software.

Figure For the most part, these details are taken care ofby the expansion joint manufacturer. Earthquake load magnitudes are given in terms of the gravitational acceleration constant, i. In order to provide margin against analytical uncertainties, it is best to use the recommended range.

Figure The maximum moment in the beam is in the center of the span, notds has a value of: This provides an equally easy-to-use equation and sacrifices little as far as accuracy is concerned. Please copy and paste this embed script to where you want to embed Embed Script.

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The decision is made to use an expansion joint in the piping system. Therefore the se loads: In order to save even the brief time required to calculate LaU, the Manufacturer Standardization Society of the Valve and Fitting Industry has calculated allowable piping spans for various piping configurations, and published them in their standard MSS SP Figure Which of course leads us back to engineering judgement.

COADE Pipe Stress Analysis Seminar Notes – Free Download PDF

The linear force per foot, f, is calculated for each end of the element and the average taken. Sh is defined as the minimum of: Generically, the stress range in a legj, due to thermal expansion in a direction perpendicular to that of leg j, is: At any support location where the vertical displacement calculated during the coad load case for hanger travel is less than the specified Rigid Support Displacement Criteria, a rigid rod will be selected and used in subsequent load cases.

Requirements for pressure design of other piping components are described in the following sections. The minimum thickness for a blank is calculated as: This standard designates standard pressure classes of flanges, which are recognized by the codes to be acceptable for the following combinations of pressure and temperature: This technique should be used sparingly in those configurations where no hangers are located within three pipe diameters or so in a horizontal direction from the nozzle being released.

However, interpretation specifically states that the application of sifs with respect to the sustained loads are not required. Not only are the causes and the failure modes ofthese two loading types quite different, but not surprisingly, the solutions to these two types ofloading are usually different as weIl.

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A support was located near node point 20 earlier; we now want to locate the next one downstream within the standard span. Therefore, even if a system has been running successfully for many years, it is no evidence that the semniar has been properly designed for secondary loads.

COADE Pipe Stress Analysis Seminar Notes

This problem is discussed in Section 2. The effect ofthese on the pipe stresses can he estimated as weil.

If the engineer supports a piping system such that no span in the system exceeds the standard spans listed in the table, it is virtually certain that the system is adequately supported for weight loading.

Itmay act in any direction, and as such the engineer has several items to consider: It should be noted that the piping codes exactly calculate the stress intensity twice the maximum shear stress only for the expansion stress, since this load case contains no hoop or radial components, and thus becomes an easy calculation. Note that due to the seminaf effect, and the fact that the primary and secondary stresses have different failure criteria, these two load types are reviewed in isolation.

Allowable Load Variation – As noted above, this is computed as: Or, examining the formulas above, it is evident that, as the shorter portion of the span b approaches zero length, the moment, and therefore the stress, approach zero as weIl. The importance factor is further influenced by the Structural Classification, where the options are: